Simple Pascal Law Experiment (Pressure String)
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Product Code : EL-POM-10368
Quick answer: The simple Pascal law experiment, or pressure string, shows that pressure applied to a confined liquid is transmitted equally in all directions. A hollow brass or glass ball with small holes along one circumference is filled with water, and when the piston in the branch tube is pushed, equal jets stream from every hole. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Item | Specification |
|---|---|
| Ball | Hollow, brass or glass |
| Holes | Small holes along one circumference of the ball |
| Mechanism | Branch tube fitted with a piston |
| Principle shown | Pascal's law: pressure is transmitted equally in all directions |
How the Pascal's law experiment is done
Pascal's law states that a change in pressure applied at any point in an enclosed, incompressible fluid is transmitted undiminished to every part of the fluid and to the walls of its container. In this apparatus the push on the piston raises the pressure of the water inside the ball, and because the holes all lie on one circumference, the jets they produce can be compared directly.
- Dip the ball in water and pull the piston back to draw water in, until the ball and branch tube are full.
- Hold the apparatus so that the ring of holes lies in a horizontal plane.
- Push the piston in steadily.
- Watch the jets from all the holes and compare how far each one reaches.
The jets leave the holes with the same speed and reach the same distance around the ball, even though the piston pushes in only one direction. The extra pressure has spread equally through the liquid. The same principle is at work in hydraulic presses, hydraulic jacks and vehicle brake systems, which makes a natural link to the next lesson.
Key features
- Hollow ball offered in brass or glass
- Small holes spaced along one circumference so the jets form a ring
- Branch tube with piston for applying pressure by hand
- Direct, visible result: equal jets in every direction
- Simple to fill, use and empty within a single lesson
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the Pascal's law pressure string at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
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The full range is in the Properties of Matter section of the Physics Lab range.
Frequently asked questions
What does the Pascal's law pressure string demonstrate?
It demonstrates that pressure applied to an enclosed liquid is transmitted equally in all directions, shown by equal jets from every hole in the ball.
What is the ball made of?
The hollow ball is made in brass or glass.
How should the apparatus be held during the experiment?
With the holes in a horizontal plane, so that the jets can be compared at the same level as the piston is pushed in.
What is the price of the Pascal's law pressure string?
Prices are not published on the website. Add the Pascal's law pressure string to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-POM-10368 and the quantity, to receive a quotation.
Does Lab Exports manufacture the Pascal's law pressure string?
Yes. Lab Exports manufactures the Pascal's law pressure string at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-POM-10368.
Request a quote
Email [email protected] with the house code EL-POM-10368 and the quantity, or add the Pascal's law pressure string to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
